Bought these a couple of years ago from on here, they are for the Honda CT panniers/top box. It makes the stupid shaped pannier useable because all your stuff stays inside when you open the lid, and is handy for carrying your pants into a swish hotel.
One has been used more than the others but all zips are fine and no rips, one shoulder strap if thats your look!

They are about £50 each new and I paid £60 for all 3.
How about £30 posted Royal mail?